java - Error while receiving data from sql server -


i have following code in 1 class of app works fine. following code snippet recieves string "okay" remote server.

try {                    list<namevaluepair> namevaluepairs = new arraylist<namevaluepair>(2);                     namevaluepairs.add(new basicnamevaluepair("userid", et1.gettext().tostring()));                    namevaluepairs.add(new basicnamevaluepair("pass", et2.gettext().tostring()));                                         httppost.setentity(new urlencodedformentity(namevaluepairs));                    client.execute(httppost);                    httpresponse response = client.execute(httppost);                    httpentity respentity = response.getentity();                     if (respentity != null) {                       // entityutils response content                       content =  entityutils.tostring(respentity);                      log.d("valueeeeeeeeeeee", content);                    }

the code php in following:

<?php  $host = "localhost";  $user = "admin";  $pass = "123"; $connection = mysql_connect($host,$user,$pass) or die (mysql_errno().": ".mysql_error()."<br>");  $userid = mysql_real_escape_string($_post['userid']);     $pass = mysql_real_escape_string($_post['pass']);  $db_select=mysql_select_db("mydb"); if(!$db_select){     die(mysql_error());     echo "error"; }      $query = "select count(1) count_users wp_users user_login = '".$userid."' , user_pass='".$pass."'";         $result = mysql_query($query);     $row = mysql_fetch_assoc($result);      if($row['count_users']>0)     {        echo "okay";     }      else     {         echo "not found";     }  if($medo=mysql_query($query)){     header("localhost/filename");     exit; }else{     echo"<p> error</p>";     die(mysql_error()); }

whereas when try run following code in php gives me error same android code.

<?php  $host = "localhost";  $user = "admin";  $pass = "123"; $connection = mysql_connect($host,$user,$pass) or die (mysql_errno().": ".mysql_error()."<br>");  $userid = mysql_real_escape_string($_post['userid']);     $pass = mysql_real_escape_string($_post['pass']);  $db_select=mysql_select_db("mydb"); if(!$db_select){     die(mysql_error());     echo "error"; }      $query= "select * wp_users";     $result = mysql_query($query);     $num_rows = mysql_num_rows($result);      if("$num_rows" > 0)     {        echo "$num_rows";     }      else     {         echo "not found";     }       if($medo=mysql_query($query)){     header("localhost/filename");     exit; }else{     echo"<p> error</p>";     die(mysql_error()); }

is there different way receive number of rows or data in rows or columns @ android end?

first of change 

if("$num_rows" > 0) {    echo "$num_rows"; }

to

if ($num_rows > 0) {    echo $num_rows; }

secondly if want number of rows use query

$query= "select count(*) wp_users";

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